Inverters for two phase induction motor

Abstract

This paper deals with comparative study of four- leg inverter with other inverter topologies and its realization for symmetrical two phase induction motor. The comparison is done on the basis of total harmonic distortions in the output voltage of the inverter. The modulation strategy used for switching is unipolar pulse width modulation due to its fixed switching frequency and low ripple contents. The input supply to the induction motor is the output of the inverter, so the output of induction motor totally depends on the inverter supplying to it. For various inverter topologies total harmonic distortion is an important parameter for the selection of the inverter. This paper simulates three topologies of the inverter in MATLAB- SIMULINK for comparing their THDs and concluding that four leg inverter is the best option.